Improvement in steam-bosler and other furnaces



V3 Sheets--Sheet 2.

c. scHEMmTH, decd.

W. WESTLAKE, Admr.

Steam-Buil'ei` and other Furnaces. No. 144,241, Patented Nov.4,1873.Y

4 3 Sheets--Shee3.

C. SGHEMIUTH, dscd,` W. WESTLAKE, Aamr.

Steam-Boiler and other Furnaces. 1N'0 144,241, Patented Nov.4,1873.

Nrrnio STATES ISTRATOR OF CASH/[IR SCHEMIOTH, DEOEASED,) ASSIGNOR TO JOHN HEAD, OF IPSVIOH, ENGLAND.

IMPROVEMENT IN STEAM-BOILR AND OTHER FURNACES.

Specification forming part of Letters Patent No. 144,241, dated November 4, 1873; application filed August 6, 1873.

,To all lwhom lit may concern:

Be it known that CAsIMIn Sennniorn, deL ceased, late of Odessa, in the Empire of Rus sia, civil engineer, during his life -t'iine iiivented certain Improvements in Steam-Boiler and other Furnaces, and in partsapplicable thereto, to facilitate the combustion of straw or other light matters as fuel, of which the ters to be used as fuel are passed, and in being so passed are compressed as they pass to the furnace. The moving or compressing surfaces employed consist of rollers in pairs, and a single pair of such feed-rollers is found to answer well, though in some cases a series of thein may be employed, in which case the pair next the mouth of the furnace will be closer together than the next pair, and so on to the outermost pair, which are placed .the farthest apartan arrangement by which a sort of double incline with traveling surfaces is obtained, the direction of motion of the surfaces of the respective rollers being toward the mouth of the furnace, the movements of the parts being by ordinaryr means. The matters to be consumed are placed on a table or surface next the feed-rollers, on one side thereof, while the feeding-mouth or fire-door of the furnace is at the opposite side of said rollers, so that the fibrous materials laid upon thc feed-tablc are seized, compressed, carried forward, and projected through the furnaccanoutli into the furnace.

In place of rollers, a pair or pairs of belts, bands, or other traveling surfaces may be employed.

The interior of the furnace is formed with a channel or channels, by which atmospheric air may be conducted to impinge on the sur face of such fuel just within the mouth of t-he furnace. Thepassageforthcintroduction ofthe atmospheric air to the interior of the furnaceV is formed with a shaft or support for the matters as they pass to the surface of the fire-bars; and in order that the invention may be fully understood, the following, with the aid of the accompanying drawings, is a description of the means pursued in carrying the same into ef feet.

Figure l shows a plan view, and Fig. 3 an end view, both partly in section, of some of the parts of a portable agricultural steam-en gine, with improvements according to the iiivention applied to it.

In each of these views the saine letters are employed to indicate corresponding parts wherever they occur, a being the body ofthe boiler, b theliue-tubes thereof' from the furnace e, and d is the fire-door or opening for the feed of the fuel to be conveyed to the furnace c. c is the main or crank axle, receiving motion from the engines. All these parts are, however, of the ordinary character. fand f1 are a pair of rollers, which, according to such iinprovements, act as the feed-rollers to feed the matters used as fuel through the mouth d of the furnace. The surfaces of these rollersf andj'1 are groove'd or toothed, so as to enable them better, in nipping the matters between them, to draw such matters forward to the fur nace as those rollers are caused to revolve in the direction of the arrows. The roller fis W aflixed to the axis f2, which is supported to revolve in suitable bearings carried by the framing g; and this axis f2 has affixed upon it a pinion, j, and also a pulley, f4. The teeth ofthe pinion f3 take into the teeth of another pinion, f5, affixed on the axis f G', carrying the roller f1. Rotary motion is given to the roller f, and thence, by the pinions j'f, to the roller f1, by a strap or band, 71, which passes partly around the pulley i on the crank or driving shaft c, and also partly around the pulley f4. The axis f6 of the roller f1 is supported in the ends of arms j j, which, at their other ends, are capable of movement on pinsj j. By this means the distance between the rollers f and f1 is slightly variable to the quantity of matter fed between them, and the roller f1 is capable of exerting a regulated pressure. The

amount of pressure exerted by the roller f1 is capable of being controlled by means of the weighted lever 7c, which turns upon the fixed stud k1, and carries the cross-bar 7a2, the outer ends of which are connected to the lorrer ends ot' rods Z, the upper ends of which bear upon the axisj'. m is a table, upon which the matters to be used as fuel are placed as they are conducted to the feed-rollers f f1.

ln some cases the combustion of the material to be supplied to the furnace c may be facilitated, and the heat evolved increased, by the admixture therewith of minute quantities of petroleum, or such like hydrocarbon oil, and suchhydrocarbon is supplied from a reservoir, a, which may be placed in any suitable position, so as, by a pipe, u1 n?, to eifect the desired supply. The part n2 of this pipe, which though shown Within the fire-door, may be placed cxterior thereof, and is perforated with numerous fine holes to admit ofthe hydrocarbon or other inflammable oil dropping on the matters to be consumed in their passage to the furnace. If desired, the pipe u2 may be placed to cause the hydrocarbon to drop on the matters While they are undergoing` combustion in the furnace.

In order to carry out these improvements, the nre-bars o are formed to turn on a hinge joint at o1, and they are held up in Working condition by chains 02, one end of each of which is attached to arms o3 from the fire-bars o, and rising from which they are wound onto, and at their other ends attached to, a roller, o4, which is provided With a ratchet-Wheel, 05,

the teeth of which are taken into by a stop, 0G,

so as to retain the roller o4, and consequently the bars 0, 1n position; but, when desired, the

' furnace can be readily cleared by releasing the stop o6 from the ratchet-Wheel 05, and thus allowing the bar to tilt, as indicated by dotted lines in Fig. 4, when the contents of the firebox c will fall into the ash-pan p, and may thence be removed into a Water-tank at q. rlhe roller oJl may be turned, for winding up the chains o2, by a handle, 07, or by a Spanner, or otherwise. The ash -pan p is provided with a door, p1, which is capable of turning at its upper end on pivots or hinges p2, and is capable of being held open at Variable distances by the toothed rod p3, as shown by dotted lines in Fig. 4, so as thereby to regulate the amount of passing to the furnace between the firebars o. A channel, s, Fig. 4, for the admission of air to the fuel in the furnace, is also formed above the upper feed-roller, and this channel is fitted With an adjustable hinged flap, o, so that the iiow of air can be regulated.

In some cases,the fire-door, or opening, d, for the supply of fuel to the furnace, may be formed lower down or nearer to the furnace-bars o, as indicated by the separate section of parts, Fig. 4. vThe same letters of reference are applied to this ligure as to the others.

Several pairs of rollers or endless belts, or other traveling feeding-surfaces, may be employed; but one pair of feed-rollers is generally found sufcient. These feeding means, and parts immediately connected therewith, may be either permanently attached to the furnace and boiler, or be capable of simple attachment thereto by screw-nuts, or such like means, when required.

Wlhat isclaimed as the invention of the said CAsrMrR ScHEMrorrr is The combination and arrangement, substantially as before set forth, of the furnace, the furnace-mouth, the compressing feeding surfaces, and the feed-table, said surfaces being arranged between the furnace -mouth and the feed-table.

litnesses G. G. WARREN, REGD. E. HANsoN, Both of 1V 17 Gfracccllfm'ch Street, London. 

